Apparatus for electric lighting, &amp;c.



' No. 649,l05. Patented May a, [900.

0. P. Looms.

APPARATUS FOR ELECTRIC LIGHTING, 8w. (Application filed Feb. 15, 1899.)

(No Model.) 2 Sheets-Sheet l..

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m: mm PETER c Patantod May 8, I900.

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0. P. LOUMIS. APPARATUS FOR ELECTRIC LIGHTING, 8w.

(Appliution and Feb. 15, 1 899.

(No Model.)

NTTED STATES PATENT @rricn.

OSBORN P. LOOMIS, OF DEPElV, NEW YORK, ASSIGNOR TO CHARLES M. GOULD, OFBUFFALO, NEW YORK.

APPARATUS FOR ELECTRIC LlGHTlNG, 84G.

SPECIFICATION forming part of Letters Patent No. 649,105, dated May 8,1906.

Application filed February 15, 1899. Serial No. 705,578. (No model.)

To all whom/ it may concern.-

Be it known that I, OSBORN P. LOOMIS, a citizen of the United States,residing at Depew, in the county of Erie and State of New York, haveinvented new and useful Improvements in Apparatus forEleetrie Lighting,&c., of which the following is a specification.

This invention relates to an electric lighting or heating apparatuswhich embodies a dynamo or generator and two storage batteries and inwhich the dynamo is driven intermittently and in some cases rotated ineither direction-as, for instance, when the apparatus is used on arailroad-car and the dynamo is driven from one of the car-axles. Inapparatus of this kind the batteries have been connected with thecharging and service circuits by an automatic switch of suchconstruction that one of the batteries was connected with thecharging-circuit and the other with the service-circuit and that theconnection was alternated upon the stopping or starting of the dynamo orthe interruption of the current in the charging-circuit.

The main object of the present'invention is to organize the apparatus insuch manner that in addition to the alternating of the batteryconnections the batteries are coupled in parallel with thecharging-circuit when the service-circuit is broken or with theservicecircuit when the charging-circuit is broken, so that in the caseof a lighting apparatus both batteries are connected in parallel withthe lights and feed the same simultaneously when the generator is cutout or idle and both batteries are connected in parallel with thecharging-circuit and are simultaneously charged when the lights are cutout.

In the accompanying drawings, consisting of two sheets, Figure 1 is adiagram illustrating my improved electric-lighting system, showing thecircuits when the battery-switch is in one of its extreme positions.Fig. 2 is a fragmentary diagram showing the batteryswitch in the otherextreme position and the adjacent parts of the circuits. Fig. 3 is asimilar diagram showing the battery-switch in a balanced position. Fig.4c is a similar diagram showing the resistance between the generator andthe lamps omitted. Fig. 5 is a vertical longitudinal section of thebatteryswiteh in line 5 5, Fig. '7, showing the switchlevers in acentral orbalanced position. Fig. 6 is a similar section taken in line 66, Fig. 7 and showing the switch-levers turned fully in one direction,so that their arms on one side of the pivots engage with the opposingcontacts, while their arms on the opposite side of the pivots aredisengaged from the opposing contacts. Figs. 7 and 8 are horizontalsections in lines 7 7 and 8 S, Fig. 5, respectively. Fig. 9 is aperspective view of the rightingsprings of one of the battery-switchlevers. Fig. 10 is a front elevation of the electromagnetic switchwhereby the battery-switch magnet is cut out when the lamps are cutout.Fig. 11 is a vertical section of the same in line 11 11, Fi 10. I

Like letters of reference refer to like parts in the several figures.

A represents the insulating switchboard of the dynamo or electricgenerator, B B the two storage batteries, and O the electric lamps orother translating devices in which the current is utilized. When thissystem is used for lighting railway-ears, the armature of the dynamo isdriven from one of the axles of the car and its brushes (1 d engage withthe commutator d of the armature, so as to permit of turning the latterin either direction and operating the dynamo when running the carforward or backward. In order to permit of reversin g the movement ofthe armature without changing the direction or polarity of the current,an automatic pole-reversing device of any suitable construction isemployed. The reversing device indicated in the drawings issubstantially the same as that which is shown and described in LettersPatent No. 602,182, dated April 12, 1898, and No. 617,121, dated January3, 1899, both granted to Preston and Gill. This reversing device,briefly stated, is constructed as follows: 6 6 represent twoeontact-plates arranged on opposite sides of the armature and connected,respectively, with the brushes d d. f f are two contact-plates which arearranged adjacent to the brush contact-plates e 6, respectively, andwhich are both connected to the wire F, which is one of the mainconductors of the dynamo. g g represent two contact-plates, which arealso arranged adjacent to the brush contact-plates e 6, respectively,and which are both connected to the other main conducting-wire G- of thedynamo. ll represents the contact-lever supported on the shaft of thearmature and provided with two blades 71 h. \Vhen the armature isturning in one direction, the contact-lever makes contact by its blades71v 7t, respectively, with the contact-plates e f and c g, as shown inFig. 1. When the contactlever is reversed, it makes contact,respectively, with the contact-plates e g and. cf. Fora full descriptionof this reversing device reference is made to the above mentionedLetters Patent.

One side of the lamps is connected with the dynamo by the main wire Gand with the like terminals of both storage batteries by a wire I. Theopposite like poles of the batteries are connected to a battery-switchK, whereby both batteries may be connected in parallel with the lamps orwith the dynamo or whereby one of the batteries may be connecteddirectly with the dynamo for receiving a charge there from, while theother battery is connected indirectly with the dynamo and directly withthe lamps for regulating the pressure upon the latter. This switch isconstructed as follows: k represent two posts which are arranged side byside on an insulator-base The post 7t is connected with the dynamo bythe main wire F, and the other post 7c is connected with the lamps by awire L.- m m are two contacts arranged on the base 7.; in line with andon opposite sides of the post 7t, and n nare two similar contactsarranged in line with and on opposite sides of the other post 70'. Theadjacent terminal of the storage batteryB is connected by a wire 0 withthe contact m and by a diagonal wire 0 with the contact n. The adjacentterminal of the other storage battery 13 is connected by a wire 1) withthe contact a and by a diagonal wire p with the contact on. The contact71, there fore, forms the extreme terminal of the battery B and thecontact on located in the conductor connecting the battery with thisextreme terminal, while the contact m forms the extreme terminal of thebattery 13 and the contact a is located in the conductor connecting thisbattery with this extreme terminal.

Q and R represent a pair of parallel switchlevers which are arrangedside by side in a snbstantially-horizontal position and each of which ispivoted at its middle, one to the post a and the other to the post it.These levers are adapted to connect and disconnect said posts and thecontacts on opposite sides there of. Upon tilting the switch-levers intothe po sition shown in Figs. 1 and 6 the arm got the switch-lever Q isengaged with the contact m, while the other arm q is disengaged from thecontact m, and the arm r of the switch-lever R is engaged with thecontact a, while its other arm 9" is disengaged from the contact '17,,thereby placing the storage battery l in direct circuit with the dynamoand the other storage battery B in direct circuit with the lamps. Upontilting the switch-levers Q R fully in the opposite direction, as shownin Fig. 2, the arm q of the switch-lever Q is engaged with the contactat and its other arm q is disengaged from the cont-act Wt and. the otherarm 0" of the switch-lever R is engaged with the contact a and its otherarm '1' is disengaged from the contactw, thereby reversing the relationof the batteries to the lamps and dynamo and connecting the battery 13directly with the dynamo and the battery 3 directly with the lamps. Whenthe switch-levers Q R are horizontal or in a balanced central position,as shown in Figs. 3, 5, and '7, the arms q q of the switelrlever Qengage simultano ously with the contacts m and m and the arms 1' "I" ofthe switch-lever t engage simultaneously with the contacts 11 9).,thereby placing both storage batteries in parallel and in directconnection with the lamps or the dynamo. When the switch-levers are inthis balanced position and the batteries are connected in parallel, bothbatteries are charged at the same time by the dynamo if the lamps arecut out or both batteries feed the lamps at the same time it the dynamois stopped or cut out.

Each of the switclrlevers Q It is provided centrally with a dependingrighting-arm s and when free is yieldingly held in a horizontal balancedposition by a balrnicing-spring The latter consists of two coils ss,surrounding the pivot of the switch-lever on opposite sides of its post,diverging arms a extending downwardly from the ends of each coil andcross-bars s connecting the arms of both coils on the same side of thepost, as shown in Fig. 9. The cross-bars bear against both sides of thepost and the righting-arm when the switch lever is balanced orhorizontal, as shown in Fig. 5, and tend to return the lever to thisposition.

Upon depressing th switch-arm on one side of the post the cross-barconnecting the spring arms on the same side of the post is pressedagainst the post, while the spring-arms and cross-bar on the other sideof the postare do i'lected by the righting arm, as represented in Fig.(5. When the switch-lever is tree, the deflected arms of the spring turnthe lever and its righting-arm back until both crossbars of the springbear against opposite sides of the post, in which position of the springthe switch-lever is horizontal. Each of the switch-levers and itsrighting-arm are preferably made out of two or more plates, which arearranged side by side, with a space between them, and the posts are madecombshaped to receive the lever and its righting arm between the membersof the post, as shown in Figs. 5, (5, and 7.

T T represent an electromagnet and its armature, whereby theswitch-levers are tilt ed and which are preferably of the solenoid type.The magnet consists of a core having a conical concave upper or frontend, a coil 6', surrounding the core, a casing or shell surrounding thecoil, a head i, connecting ITO the rear or lower ends of the core andshell, and a ring 29*, arranged on the upper end of the shell and havinga conical concave inner side which is in line with the conical upperface of the core. The conical faces of the core and the ring formtogether the pole of the magnet. The armature is provided on its lowerside with a conical convex face which fits into the conical pole of themagnet. This construction of the magnet and armature increases the areaof the opposing faces on the magnet and armature,and therefore increasesthe power of the magnet. The armature is guided in its movement towardand from the magnet by an axial guide-rod i Fig. 6, to which it issecured and which slides with its lower end in an opening in the core ofthe magnet and with its upper portion in a plate i secured to theinsulating-base 10 The armature is yieldingly held in its retracted orelevated position by a spring t surrounding the guide-rod and bearingwith its ends against the top of the plate L and a shoulder on the upperend of the guide-rod.

U U represent two links, whereby the armature is connected with theswitch-levers, and the latter are tilted by the forward or downwardmovement of the armature. These links are arranged on opposite sides ofthe guide-rod t and plate i and move in an opening in theinsulating-base 76*, Fig. 7. The links are pivoted at their lower endsto opposite sides of a hub a on the upper side of the armature and theirupper ends are connected by an insulated cross-bar u. The links arearranged between the switch-levers Q R and are provided at their upperends with laterally-projecting studs d of insulating material, whichbear against the upper sides of the switch-1evers, respectively. lheupper side of each switch-lever is preferably curved convexly along itscentral portion and provided at the ends of this curved portion onopposite sides of the pivot with shoulders or stops a Each of the linksis provided adjacent to its pivot at its lower end with alaterally-projecting trip or shifting arm 10 the trip-arms of both linksprojecting in opposite directions, as shown in Figs. 5 and 8. These triparms engage alternately with yielding stops or springs a during the lastportion of the upward movement of the armature,and thereby turn thelinks alternately from one side to the other of the pivot of theswitch-levers. These yielding stops are secured to the under side of theinsulating-base and the latter and the magnet are mounted in asupporting-frame V, which is secured to the car-body or other support.During the downward movement of the armature the studs 10 at the upperends of the links bear against the shoulders 10 of the switch-levers onone side of the pivots thereof and pull the respective arms downwardly,as shown in Fig. 0. During the subsequent upward movement of thearmature and the links the rightingsprings S return the switch-leversinto a horizontal position, and during the last portion of this movementthe trip-arm on the side opposite to that toward which the links inclinestrikes against its springstop 11 thereby turning the links so that theupper ends thereof move from the shoulders on one side of theswitch-levers to the shoulders on the opposite side thereof. During thenext downward movement of the armature the switch-levers are tilted bythe links in the opposite direction, and when the armature rises thelinks are shifted back to the position shown in Figs. 5 and 6 by theuppermost trip-arm a striking the respective spring-stop "a By thismeans the switch-levers are alternately tilted in opposite directions bythe successive reciprocations of the armature.

The coilof the switch-magnet is connected at one end by a wire 10, Fig.1, with the main wire F of the dynamo and atits opposite end by a wireto with a contact 10 The latter, together with a con tact-plate w formsa pair, which is arranged on the dynamo-board A adjacent to thereversing contact-lever II. The contact-plate 10 is connected by a wire10 with the main dynamo-wire G.

W is a contact-blade arranged on an arm of the contact-lever II andadapted to cross the contact-plates 10 w in either extreme position ofthe lever. When the contact-lever H makes contact with either of itssets of contacts, and thereby closes the circuit through the main wiresF and G, the blade XV makes contact with its contacts 10 10 and socloses the circuit through the branch wires 10 w and the magnet-coil Tin the same. WVhen the contact-lever H moves away from its contacts bythe movement of this lever away from the switchboard A of the dynamo,the blade WV moves away from its contacts-w 20 and so breaks the circuitthrough the branch wires w w. This prevents the storage batteries frommaintaining a current through the branch circuit when the circuitthrough the main wires F G is broken. The batteryswitch is wound to ahigh resistance, so as to avoid short-circuiting the dynamo.

a: x represent the two contacts of a switch which is arranged in thebranch circuit in which the battery-switch magnet is arranged. Thisbranch switch is opened or closed by an electromagnct g, which isincluded in the wire L of the lamp-circuit. The cont actor is secured tothe frame 11 which supports the branclrswitch magnet 1 The contact a isarranged on one arm of a lever 1 which is pivoted on said frame andwhich carries the armature 3 of the branch-switch magnet on its otherarm. Nhen the lamps are in use, the current traverses the branch-switchmagnet y, whereby the armature of the latter is attracted and theswitch-contacts .r w are engaged, thereby closing the branch circuitthrough the battery-switch magnet and cansing the latter to tilt thebattery-switch. \Vhen the lamps are cut out, the magnet y is deenergizedand its lever g is turned by a spring p in such a direction that thearmature is moved away from the magnet gj and the contacts areseparated, thereby breaking the branch circuit through thebattery-switch magnet and preventing the same from shifting thebattery-switch.

2 represents a resistance which is preferably interposed between thecontacts or extreme battery-terminals m and n of the batteryswitch.

Assuming that the dynamo is running at a normal speed, that the lamps orother transmitting devices are in use, that the battery switch leversare tilted and are with their arms q 1" in engagement with the contactsat n and with their arms q r out of engagement with the contacts 102 n,and that the storage battery B has previously been charged, the currentgenerated by the dynamo is distrib uted as follows: Commencing at thebrush d the current passes successively through the contact e,switch-blade 71, contact f, wire F, post 7.3, and arm q to contact m. Atthe lat ter point the current divides, and one part thereof passesthrough the wire 0 to the storage battery 13 and charges the same,thence along wire I, wire G, contact r, blade 7t, contact c, and brush dto the armature-commutator. The other part of the current passes fromthe contact on through the diagonal wire 0, contact a, resistance .2,contact m, diagonal wire 13', contact a, lever 7', post 7t, wire L,includ= ing coil of magnet 1 lamps O, and then unites with the currentof the charging-battery B in its return passage along the wire Gr to thed yname.

The resistance is preferably so proportioned that the pressure of thecurrent after passing the resistance is somewhat less than the pressureof the charged battery, so that the latter under normal conditions willdischarge slightly. The current so discharged by the battery and thedynamo-current which passes the resistance unite and pass through thelamps and back to the dynamo. If the voltage of the current generated bythe dynamo rises above the normal by reason of an increased speed of thedynamo and the pressure of the current after passing the resistance isgreater than the pressure of the charged battery, the pressure of thedynamoeurrent overcomes that of the charged battery and passes throughthe latter to the return-wires I G, thereby increasing the charge of thecharged battery. The charged battery thus serves as a regulator byabsorbing any excessive pressure of the dynamo-current which the lampsdo not take up, thereby avoiding undue pressure and wear on the lampsand causing the same to burn more uniformly.

When the dynamo has stopped or has been cut out by the slow speed of thecar and then resumes the generation of a normal currentfor instance,when the car has stopped or slowed up and then proceeded or has reversedits direction of motion-the connection of the batteries is reversedautomatically. The battery which was previously connected with thedynamo is now connected with the lamps or service-circuit to supply thesame in part, and the battery which was previously connected with thelamps is now connected with the dynamo to be charged thereby. This isaccomplished by the reversal of the battery-switch by the operation ofthe battery-magnet, as heretfoore described, whereby the switcharms q rare engaged with the contacts we a and the switch-arms q r aredisengaged from the contacts m n, as shown in Fig. 2. The cu1= rent fromthe dynamo now passes through the wire F, post 7t, and arm q to contactm, where it divides, and one part passes through the diagonal wire 13,contact '12 and wire 13 to the exhausted battery B for charging thesame. The other part of the current passes through the resistance tocontact a, where it is joined by the discharge from the charged battery13 coming over wire 0, contact m, and wire 0'. The combined currentsfrom the dynamo and the battery B pass from the contact a through arm1*, post and wire L to the lamps.

If the lamps are all cut out, the circuit through the wire L is broken,and the magnet y, located in the same, is deenergized. This causes theseparation of the contacts a w in the branch circuit in which thebattery-switch magnet is located, whereby the latter is renderedinoperative, and its armature is released, thereby causing theswitclrlevers to assume a balanced or horizontal position, in which eachlever engages simultaneously with the contacts on both sides thereof, asshown in Figs. 3 and 4. In this position of the switch-levers thecurrent of the dynamo divides at the post 7c, one part passing by arm q,contact on, and wire 0 to the battery 1; and the other part passing frompost 7c by arm (1', contact m, wire 1), contact a, and wire 1) to theotherbatteryB, thereby placing both batteries in parallel with thedynamo and eharging both simultaneously.

If the lamps are in use and the dynamo is cut out or stops running, thebattery-switch magnet becomes inoperative, and the switchleversQ Rassume the same horizontal or bal anced position which they occupy whenthe lamps are cut out. This places both batteries in parallel with thelamps and the current now discharged from both batteries feeding thelamps, the current from battery B passing through wire 0, contact m,wire 0, contact a, and arm r to post 7a, where it is joined by thecurrent from battery 15 passing along wirep, contact 91, and arm 0'. Thecurrents of both batteries pass together from post 7t by wire L to oneside of the lamps and return by wire I to the opposite terminals of bothbatteries.

By connecting both storage batteries in parallel when the lamps are cutout or when the dynamo is cut out the batteries are charged or aredischarged at the same time, thereby avoiding greater wear on onebattery than on the other and causing them to work more uniformly.

If desired, the resistance 2 between the contacts m and a may beomitted, as shown in Fig. 4, in which case the dynamo under normalconditions will be connected with only one battery for charging thesame, while the lamps or other translating devices are connected withthe other charged battery. As shown in Fig. 4, the switclrievers areconnected only with the contacts m n. The dynamo-current delivered bywire F passes through post 7t", arm g, contact m, wire I), contact a,and wire 19 to battery B and then passes by wires 1 G to the oppositeside of the dynamo. The current from the charged battery B passes fromone terminal thereof through wire 0, contact m, wire 0, contact n, armr, post it, and wire L to one side of the lamps and returns by wire Ifrom the other side of the lamps to the opposite terminal of the chargedbattery B. When the batterymagnet T reverses the battery-switch levers,they bear only against the contacts m 01, whereby the exhausted batteryB is connected with the dynamo and the charged battery B is connectedwith the lamps.

If the lamps are cut out while the dynamo is running or if the dynamo iscut out while the lamps are in use, the switch-levers connect thecontacts m m and n n and couple the batteries in parallel, so that bothbatteries are charged at the same time by the d ynamo or feed the lampsat the same time, this operation being the same as when the resistanceis employed.

By leaving out the resistance the lamps burn uniformly because they arefed only by the discharging-battery and are not affected by thefluctuations of the dynamo; It is desirable, however, to employ theresistance because it permits the lamps to be fed principally by thedynamo when the car is running, thereby holding the pressure of thecharged battery in reserve for use when the car stops or the dynamo iscut out.

I claim as my invention 1. The combination with a dynamo, two storagebatteries, a charging-circuit and a service-circuit, of an automaticswitch which is interposed between said circuits and batteries, saidswitch being provided with contacts for alternating the connectionsbetween the batteries and said circuits and for connecting bothbatteries in parallel with the service-circuit, and with a switch-leverarranged to alternate the connections in either of its extreme positionsand to connect both batteries in parallel with the service-circuit inits intermediate position, an electromagnet which is deenergized whenthe service or the charging circuit is broken and thereby allows theswitch-lever to assume said intermediate position, and-means wherebysaid magnet, upon being energized, shifts the switch-lever to one of itsextreme positions, substantially as set forth.

2. The combination with a dynamo, two storage batteries, acharging-circuit and a service-circuit, of an automatic switch which isinterposed between said circuits and batteries, said switch beingprovided with contacts for alternating the connections between thebatteries and said circuits and for connecting both batteries inparallel with the service-circuit, and with a switch-lever arranged toalternate the connections in either of its extreme positions and toconnect both batteries in parallel with the service-circuit in itsintermediate position, an electromagnet which is arranged in a branch ofthe chargingcircuit and which, when denergized, allows said switch-leverto assume said intermediate position and which is provided with meanswhereby said magnet, upon being energized, shifts the switch-lever toone of its extreme positions, a switch arranged in said branch circuitto open and close the same, and an electromagnet which operates saidbranch switch and which is arranged in the servicecircuit, substantiallyas set forth.

3. The combination with the storage batteries and the chargingandservice circuits, of an automatic switch embodying rockingcontact-levers capable of assuming an inclined position in eitherdirection, in which they make contact on one side of their pivots andnot on the other, and also capable of assuming an intermediate position,in which they make contact on both sides of their pivots, contactsarranged on opposite sides of the pivot of each lever, connections whichare arranged to extend from the two contacts opposing one leverseparately to both batteries, and from the two contacts located on thesame side of the pivots of both levers to both batteries, and posts onwhich said levers are pivoted and which are connected one with thecharging and the other with the service circuit, whereby the levers ineither extreme po' sition connect one battery directly with thecharging-circuit and the other directly with the service-circuit andalternate such con nections upon assuming the other extreme position,while the levers in their intermediate position connect both batteriesin parallel with the charging and service circuits, substantially as setforth.

4. The combination with the storage batteries and the charging andservice circuits, of an automatic switch embodying rockingcontact-levers capable of assuming an inclined position in eitherdirection, in which they make contact on one side of their pivots andnot on the other, and also capable of assuming an intermediate position,in which they make contact on both sides of their pivots, contactsarranged on opposite sides. of the pivot of each lever, one beingconnected with one battery and the other forming the extreme terminal ofthe other battery, a resistanee interposed between the extreme terminalsof both batteries, and posts on which said levers are pivoted and whichare conneeted one with the charging and the other with the servicecircuit, substantially as set forth.

5. The combination with the rockingswitchlevers,the contacts arranged onopposite sides of their pivots, and the actuating-magnet and armature,of a rocking link pivoted at one end to the armature and adapted to bearwith its free opposite end upon said levers, and a stop which isencountered by the link as the latter moves with the armature andwhereby the link is rocked on its pivot and its free end is thrown fromone side of the piv0t-line of the levers to the other, substantially asset l.'orth.

G. The combination with the rocking switchlevers, the CO] itaetsarranged on opposite sides of their pivots, and the actuating-magnet andarmature, of a rocking link pivoted to the armature and adapted to bearwith its free end upon said levers, a stop whereby the link is rocked onits pivot and its free end is thrown from one side of the pivotline tothe other, and a righting-spring whereby the levers are held in anintermediate position when released by the magnet, substantially as setforth.

7. The combination with the rock ing' switchlevers provided withrighting-arms and the contacts arranged on opposite sides of theirpivots, of an actuatinganagnet, a movable armature, a rocking linkpivoted to said armature and bearing with its free end upon said levers,a stop whereby the free end of said link is shifted from one side of thepivotline of said levers tothe other, posts on which said levers arepivoted, and a rightingspring' applied to the pivot of each lever andbearing against each post and righting-arm, substantially as set forth.

8. The combination with the roekingswitehlevers and the contactsarranged on opposite sides of their pivots, of an electromagnet andarmature, a shifting link pivoted at one end to said armature andprovided with shifting arms projecting in opposite directions, said linkbearing with its opposite end upon said levers and being free to movefrom one side of the pivot-line to the other, a plate on which saidlevers are pivoted, an d. yielding stops secured to said plate andadapted to arrest the movement of said arms and so shift thelink,substantially as set forth.

9. The combination with a dyna1no,two storage batteries, acharging-circuit and aservieecircuit, of an automatic battery-switchinterposed between said circuits and said batteries, an electromagnelwhich operates said switch and which is arranged in abranch of the chargbig-circuit, an automatic reversing contactlever and contacts wherebythe charging-circuit is made and broken upon the stopping and startingof the dynamo, and a contactb]ade carried by said reversing eontactleverand contacts in said branch circuit, whereby said branch circuit is madeand broken simultaneously with the making and breaking of thechargingcircuit, substantially as set forth.

\Vitness myhand this 7th day of lleln'uary, 189a.

()SllUltt .l. llOOMlS.

Witnesses:

S. R. llnnnvn, W. H. LANDON.

